On most tubes, you only need an additional resistor on the decimal point if it can be turned on with no digit being turned on at the same time. If it is only ever on when a digit is on, you will not need an additional resistor. I have no idea why.
Of course, this also means that if you want to display the decimal point both with and without a digit being turned on, you will need two paths to ground for it. But yes, if you use one 74141 for all the decimal points, you would only be able to display one at a time. On Monday, February 24, 2020 at 11:22:23 AM UTC-5, John Snow wrote: > > I'm trying to use 74141 drivers (intentionally), they have enough outputs > to drive 0-9 per tube; but not including a display point. > > I'm hoping to use a seperate driver to drive the display points (with an > approproate resistor to reduce the current from numerical display levels) > > Will this mean I can only have one decimal point active at a time? > > I don't have the parts to breadboard yet, so stuck to theoretical. > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/689ff972-115e-4ddc-ac15-3ff5cb74b175%40googlegroups.com.
